can't reach ULA when using ip aliases

[BPplays]

when i have LAN set to use an ip alias for a ULA range my opnsense firewall can't reach anything over that ULA even though other things can and it can over my GUA prefix
in the firewall logs live view it shows the traffic as action: 'pass' with label: 'let out anything from firewall host itself'
the firewall seems to respond to pings to it over its ULA, this issue only started recently